Suspension Lockout System

TM 9-2350-238-10 Item No. 33 34 Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR THE RECOVERY VEHICLE M578–CONTINUED Interval After After Item to Check/Service Suspension Lockout System (Continued) Spade Procedure b. Check for defective lockout cylinders. (1) (2) (3) (4) (5) Lower Place a wood block, 4 to 6 in. (10.16 to 15.24 cm) high, under one track. Start engine and make sure lockout control valve handle is in UNLOCKED position. Drive vehicle over block slowly. Watch road wheels. All road wheels should rise over block. If any do not rise, notify unit maintenance. Set lockout control valve handle in LOCKED position. Drive vehicle over block slowly. Watch road wheels. Except as noted above, wheels should remain rigid. If any wheel rises, notify unit maintenance. and raise spade, checking for cracks at cylinder mounting points, smoothness of operation, and leaks. Not fully Mission Capable if: Two front or two rear lockout cylin- ders are inoperative. Two lockout cylinders are in- operative on one side of vehicle. During operation, spade cannot be emplaced or re- tracked to stowed position. Cracks exist at cylinder mounting points or class Ill leak is present. 2-41